Conductance path mechanism for wireless heartbeat transmitter

ABSTRACT

A conductance path mechanism of wireless heartbeat transmitter comprising: a circuit board, a spiral spring, an U-shaped contact rod integrally molded to both side ends of a bottom cover, and a rubber conductible sheet; wherein the horizontal portion of said U-shaped contact rod is totally inserted inside a foundation of a bottom cover to form a steady mechanism; and, one vertical end of said U-shaped contact rod forms three upward vertical pins which are inserted into a rubber conductible sheet to make a steady conductible contact mechanism of insert-connection; the other vertical end of said U-shaped contact rod forms a contact positioning pin which makes a spiral spring collar a contact positioning pin in order to make a superior electrical contact formed by said circuit board and said U-shaped contact rod and to construct a steady conductance path mechanism so as to increase the accuracy of monitored heartbeat signal.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Present Invention

[0002] The present invention relates to conductance path mechanism for awireless heartbeat transmitter; and more particularly, relates to thebottom cover mechanism of a wireless heartbeat transmitter with anU-shaped contact rod integrally molded which U-shaped contact rod isprovided with three upward vertical pins inserted into a rubberconductible sheet to make an excellent insert-connection of electricityconductance to wireless heartbeat transmitter.

[0003] 2. Description of Prior Art

[0004] The prior wireless heartbeat transmitter includes a conductiblerubber used as an electrode for monitoring heartbeat signal, and acircuit board with a signal transmitter. While the conductible rubberand the circuit board form an electrical connection, the heartbeatsignal monitored by the conductible rubber is wirelessly transmittedfrom the signal transmitter of the circuit board to a separate butcorresponding receiver to reach a goal of wirelessly monitoring anuser's heartbeat.

[0005] The key point of the prior wireless heartbeat transmitterregarding its quality and accuracy to heartbeat signal is that whetherthe electrical connection between the conductible rubber and the circuitboard is good or not, which means that the structure of electricalconnection or conductance path between the conductible rubber and thecircuit board needs to be durable and steady enough to endure thedisturbance of vibration and to refrain from dirt, damp, and wearing totransmit accurate and distortionless monitored heartbeat signal.

[0006] Therefore, how to develop a superior electrical connection andconductance path between rubber conductible and circuit board totransmit accurate and distortionless monitored heartbeat signal is themain purpose for designer who wants to make an improvement to the priorwireless heartbeat transmitter.

[0007] The structures of prior wireless heartbeat transmitters used tobuild an electrical connection or conductivity path between the circuitboard and the conductible rubber is shown as FIG. 1, which structure isto attach the bottom of the rubber conductible sheet (4) at frontsection to the top surface of a metal plate (23) and to install a bentspring sheet (11) at each side of the bottom of the circuit board (1);the rubber conductible sheet (4) and the circuit board (1) becomesconnected state by the attachment of the bottom of said spring sheet(11) to the top surface of said metal plate (23). This kind ofconductivity path structure is vulnerable to dirt, damp, and wearing,and the spring sheet (11) is easy to suffer mal-contact caused byvibration since said rubber conductible sheet (4) and said metal plate(23) are only “surface to invention.

[0008]FIG. 3 is an explosion drawing of the wireless heartbeattransmitter of the present invention.

[0009]FIG. 4 is a locally enlarged drawing of said bottom cover (80).

[0010]FIG. 5 is a cross-section drawing of FIG. 2 along a-a line.

[0011]FIG. 6 is a locally enlarged drawing of “A” district of FIG. 5.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Referring to from FIG. 2 to FIG. 6, the wireless heartbeattransmitter (10) of the present invention comprises an upper cover (20),a bottom cover (80), a circuit board (30), two spiral springs (40), twoU-shaped contact rods (50) integrally molded to both left and rightsides of said bottom cover (80), two fixing bands (60), two rubberconductible sheets (70), two pressing plate (65), and a battery cover(90).

[0013] The mechanism of said bottom cover (80), which is the key portionfor the present invention to reach tight electrical connection andsuperior conductance path, has a foundation (81) forming the base ofsaid bottom cover (80), a front wall rib (82) and a rear wall rib (83)symmetrically forming both side end walls of said bottom cover (80) andmaking both side ends of said bottom cover (80) form an opening (84),and a left wall rib (85) and a right wall rib (86) located at anappropriate location close to both ends of said front wall rib (82) andsaid rear wall rib (83); therefore, said bottom cover is made to havethree districts comprising: a central district circled by saidfoundation (81), said front wall rib (82), said rear wall rib (83), saidleft wall rib (85), and said right wall rib (86); a left districtlocated at the left side of said left wall rib (85) and having anopening (84); a right district located at the right side of said rightwall rib (86) and having an opening (84).

[0014] Said central district of said bottom cover (80) accommodates andfixes said circuit board (30), the central portion of said foundation(81) of said bottom cover (80) having a hole to accommodate a battery,and the four comers of the central district of said bottom cover (80)each having a hub rib (87) bulging from said foundation (81)respectively, said circuit board (30) being installed to said four hubribs (67) with screws; therefore, while a battery is installed (notshown in drawing) and said battery cover (90) is covering said bottomcover (80), the battery provides the power needed by said circuit board(30). Said left district located at the left side of said left wall rib(85) and said right district located at the right side of said rightwall rib (86) are utilized to fix and lock said fixing bands (60) atboth left and right sides, so a hub rib (88) bulging from saidfoundation (81) respectively at the comers of said left district andsaid right district, said fixing band (60) collaring said hub rib (88),and said metal pressing plate (65) being fixed and locked with screws.

[0015] An U-shaped contact rod (50) is integrally molded to saidfoundation (81) at the neighboring area between said central districtand said left district and at the neighboring area between said centraldistrict and said right district respectively, wherein the horizontalportion of said U-shaped contact rod (50) is totally inserted insidesaid foundation (81) of said bottom cover (80) to form a water-proofmechanism; each of both vertical ends of said two U-shaped contact rods(50) forms three upward vertical pins (51) which protrude into the leftdistrict and the right district of said bottom cover (80), and each ofthe other two vertical ends of said two U-shaped contact rods (50) formsa contact positioning pin (52) which protrudes into the central districtof said bottom cover (80). In addition, two rib walls each respectivelybulges at the surrounding area of said contact positioning pin at bothsides of the central district of said bottom cover (80), each of whichrespectively forms a spring detent groove (89) with said left wall rib(85) and said right wall rib (86); however, the height of said contactpositioning pin (52) is higher than that of said spring detent groove(89).

[0016] The positive electrode and the negative electrode at the bottomof said circuit board (30) are welded to said spiral springs (40); eachof said spiral springs (40) at both sides of the bottom of said circuitboard (30) respectively collars said contact positioning pins (52) ofsaid two U-shaped contact rod (50), and the lower section of said spiralspring (40) is tightly inserted inside said spring detent groove (89) ofsaid bottom cover (80) to make said spiral spring (40) and said contactpositioning pin (52) form a good electrical contact and to make saidspiral spring (40) and said bottom cover form a tight and steadymechanism; consequently, said circuit board (30) and said U-shapedcontact rod (50) form a good electrical connect as well.

[0017] The bottom surface of said fixing band (60) is installed with arubber conductible sheet (70) used for monitoring heartbeat signal;while the front ends of said fixing bands (60) are respectively lockedinside the left district and the right district of said bottom cover(80), said three vertically upward pins (51) of said U-shaped contactrod (50) insert into the interior of said rubber conductible sheet (70),which makes an insert-connect type of conductible contact between saidU-shaped contact rod (50) and said rubber conductible sheet (70). Due tothat said pressing plate (65) is installed at the front end top surfaceof said fixing band (60), the pressing plate (65) presses said rubberconductible sheet (70) moving downward by means of tightly screwingitself to said hub rib (88) with a screw; meanwhile, the pins (51) ofsaid U-shaped contact rod (50) are totally inserted into said rubberconductible sheet (70). Consequently, said rubber conductible sheet (70)has a good electrical connect with said U-shaped contact rod (50), andsaid rubber conductible sheet (70) owning its soft tight packingcharacteristic forms a tight pressing contact with the foundation (81)of said bottom cover (80), which prevents said pins (51) of saidU-shaped contact rod (50) from contacting with air or water so as tomake the pins (51) of said U-shaped contact rod (50) completely refrainfrom gasification, the signal thereby being kept distortionless; inaddition, since the front end top surface of said fixing band (60) islocked and fixed by said pressing plate (65), the front end (81) of saidfixing band (60) and the foundation of said bottom cover (80) form atight and steady mechanism which will not loose at all while being used.

[0018] So, the aforementioned rubber conductible sheet (70), U-shapedcontact rod (50), spiral spring (40), and circuit board (30) form asuperior steady conductance path mechanism of the present invention;particularly, said bottom cover (80) and said U-shaped contact rod (50)form an integrally molded mechanism which further forms a tightlyassembled wireless heartbeat transmitter (10) with said upper cover (20)and said fixing band (60). The wireless heartbeat transmitter has amechanism of water and mist proof and a mechanism of steady electricalconnect, which effectively improves the defects of prior wirelessheartbeat transmitter.

[0019] In other words, the present invention has advantages listed asfollows:

[0020] 1. The U-shaped contact rod (50) is integrally molded to saidbottom cover (80), and the horizontal portion of said U-shaped contactrod (50) is totally inserted into the interior of said bottom cover(80); each of both vertical ends of said two U-shaped contact rods (50)protrudes to expose; this mechanism makes said U-shaped contact rod (50)and said bottom cover (80) form a tight and steady structure which hassuperior water proof characteristic and will not be disturbed byvibration.

[0021] 2. By using said pressing plate (65) and screw, said rubberconductible sheet (70) is totally inserted by the pins (51) of saidU-shaped contact rod (50). Consequently, said rubber conductible sheet(70) has a good electrical connect with said U-shaped contact rod (50),and said rubber conductible sheet (70) owning its soft tight packingcharacteristic wraps the pins (51) completely, which prevents said pins(51) of said U-shaped contact rod (50) from contacting with air or waterso as to make the pins (51) of said U-shaped contact rod (50) completelyrefrain from corrosion; moreover, said rubber conductible sheet (70) andthe foundation (81) of said bottom cover (80) form a tight pressingcontact with the foundation (81) of said bottom cover (80) to seal mistor sweat from getting into the central district of said bottom cover(80) so as to prevent said circuit board (30) from being damped andeffecting its function.

[0022] 3. The prior wireless heartbeat transmitter has disadvantages ofdistortion of monitored heartbeat signal due to mal-contact ofconnection between surface and surface, which is caused by user'smovement and vibration. The present invention uses the pressing plate(65) to press and lock the front end (81) of said fixing band (60);consequently, the front end (81) of said fixing band (60), said pins(51) of said U-shaped contact rod (50), and the foundation of saidbottom cover (80) form a steady and firm mechanism which will not loosefrom user's movement and vibration; therefore, the present invention hassuperior electrical connection and steady conductance path.

[0023] 4. The positive electrode and the negative electrode at thebottom of said circuit board (30) are welded to said spiral springs(40); each of said spiral springs (40) respectively collars said contactpositioning pins (52) of said two U-shaped contact rod (50) and istightly inserted inside said spring detent groove (89) of said bottomcover (80); consequently, said spiral spring (40) will not suffermal-contact caused by vibration, and said circuit board (30) and saidU-shaped contact rod (50) have a superior electrical connect.

[0024] 5. The rubber conductible sheet (70), and the circuit board (30)of the present invention form an excellent electrical connection and asuperior steady conductance path mechanism, the wireless heartbeattransmitter of the present invention has a mechanism of water and mistproof and a mechanism of steady electrical connect, which effectivelyprevents distortion of monitored heartbeat signal.

What is claimed is:
 1. A conductance path mechanism of wirelessheartbeat transmitter, comprising an upper cover, a bottom coverprovided with a front wall rib and a rear wall rib, a circuit board, twospiral springs, two U-shaped contact rods integrally molded to both leftand right sides of said bottom cover, two fixing bands, two rubberconductible sheets, and two pressing plate, wherein the conductance pathmechanism of said wireless heartbeat transmitter is included; saidbottom cover further has a left wall rib and a right wall rib atlocations connected to near side end of said front wall rib and saidrear wall rib respectively, and two rib walls located at the symmetricalside of said left wall rib and said right wall rib to form a springdetent groove; said U-shaped contact rod has one horizontal portiontotally inserted inside the foundation of said bottom cover and twovertical ends, wherein one of vertical ends of said U-shaped contactrods is provided with three upward vertical pins protruded out of thefoundation of said bottom cover and inserted into said rubberconductible sheet at the bottom of said fixed band to form a conductiblecontact mechanism of insert-connection, and the other vertical end ofsaid U-shaped contact rods forms a contact positioning pin whichprotrudes a height to said spring detent groove to make each spiralsprings at both sides of the bottom of said circuit board placed insidethe collar of said contact positioning pin; and the lower section ofsaid spiral spring is tightly inserted inside said spring detent grooveto make said spiral spring and said bottom cover form a tight and steadymechanism and to make said spiral spring and said contact positioningpin form a superior electrical contact and an excellent conductancepath.
 2. The conductance path mechanism of wireless heartbeattransmitter as defined in claim 1, wherein said path mechanism isfurther installed with a sheet of pressing plate at the front endsurface of each fixing band to make said three upward vertical pins ofsaid U-shaped contact rod completely inserted into the interior of saidrubber conductible sheet.